Texaco Synthesis gas generation

Child, E. T. Marion, C. P., "Recent Developments In The Texaco Synthesis Gas GEneration Process", Presented at The Fertilizer Association Of India National Seminar, December 14-15, 1973, New Delhi. 

Texaco Synthesis Gas Generation Process. For many years, The Texaco Synthesis Gas Generation Process (]L, 2, 3) has been available for licensing throughout the world as an efficient technology for converting high-sulfur residual petroleum fuels and tars into synthesis gas. More than seventy-five plants have been built in twenty-two countries since the first units came on stream in 1955. Most of these facilities have been associated with manufacture of ammonia, methanol, and oxo-chemicals. 

The Texaco Synthesis Gas Generation Process, Texaco Development Corp., New York. 

The gasification plant is equipped with two Texaco gasifiers, each capable of producing all of the synthesis gas required for operation of the complex. Eastman chose an entrained-bed gasification process for the Chemicals from Coal project because of three attractive features. The product gas composition using locally available coal is particularly suitable for production of the desired chemicals. Also, the process has excellent environmental performance and generates no Hquids or tars. EinaHy, the process can be operated at the elevated pressure required for the downstream chemical plants. 

The saturated, cleaned raw synthesis gas from a Texaco partial oxidation system is first shifted by use of a sulfur resistant catalyst. Steam required for shifting is already present ia the gas by way of the quench operation ia the generator. The shifted gas is then processed for hydrogen sulfide and carbon dioxide removal followed by Hquid nitrogen scmbbiag. 

Both FLEXICOKING and partial oxidation are commercial processes for petroleum residue (12,13). In addition, partial oxidation has been utilized to generate Synthesis gas with coal as a feed (14,15). Coal liquefaction bottoms have been processed in small pilot units in recent studies including Exxon s 2 B/D FLEXICOKING pilot plant (3) and Texaco s 12 T/D partial oxidation unit (16). Studies in Exxon s unit have included EDS bottoms from Illinois and Wyoming coals while SRC-I, SRC-II, H-Coal and... 

Brief Plant Description. Oxygen is reacted with a feedstock/steam mixture in a Texaco or Shell generator to produce a synthesis gas with a low H /CO ratio together with carbon dioxide, methane, sulfur compounds and a small percentage of unreacted carbon. 

The total program is planned to provide sufficient information to confidently design large scale second generation coal gasification plants (100,000 Nm3/hr of synthesis gas) using the Texaco process. 

Another gasification alternative under consideration is the use of entrained-bed gasification with Texas lignite, such as the Shell or Texaco processes (36). Such a gasifier could be used to produce synthesis gas or be used in conjunction with a combined-cycle power generation facility. A recent EPRI report prepared by Fluor Engineers (41) presented the results of a detailed engineering and economic evaluation of such a power... 

As discussed in the Existing Commercial Projects portion of this section, several commercial projects use the Texaco coal gasification process. However, these plants are for chemical synthesis gas application and do not include IGCC power generation. In addition, most commercial Texaco projects do not use syngas coolers to generate steam from the hot raw coal gas. 

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